#include <iostream>

using namespace std;

int main()
{
    int riadky = 5;
    int casty = 5;
    cin >> riadky;
    cin >> casty;

    string ostrov[riadky];

    for(int i = 0; i < riadky; i++)
    {
        cin >> ostrov[i];
    }

    int pocetOstrovou = 0;
    int** infoPolicko = new int*[riadky];
    for(int i = 0; i < riadky; ++i)
    {
        infoPolicko[i] = new int[casty];
        for(int j = 0; j < casty; j++)
        {
            infoPolicko[i][j] = -1;
        }
    }

    for(int x = 0; x < riadky; x++)
    {
        for(int y = 0; y < casty; y++)
        {
            if(ostrov[x][y] == '#')
            {
                int create = -1;
                if(x != 0 && ostrov[x - 1][y] == '#')
                {
                    create = infoPolicko[x - 1][y];
                }
                if(y != 0 && ostrov[x][y - 1] == '#')
                {
                    create = infoPolicko[x][y - 1];
                }

                if(create == -1)
                {
                    pocetOstrovou++;
                    create = pocetOstrovou;
                }
                infoPolicko[x][y] = create;
            }
        }
    }
    cout << pocetOstrovou << endl;
}